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Finding the Fourth Proportional to 293.68, 405.44 and 231.68

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Solution

The fourth proportional to 293.68, 405.44 and 231.68 is: 319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.68 : 405.44 = 231.68 : x
  2. Step 2: Convert to fraction form
    293.68/405.44 = 231.68/x
  3. Step 3: Cross multiply
    293.68x = 405.44 × 231.68
  4. Step 4: Simplify right side
    293.68x = 93,932.34
  5. Step 5: Solve for x
    x = 93,932.34/293.68
  6. Step 6: Final answer
    x = 319.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.